/* example usage: dtrace -q -s /path/to/dist.d */
/*
 * %CopyrightBegin%
 *
 * Copyright Scott Lystig Fritchie 2011-2012. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * %CopyrightEnd%
 */

erlang*:::dist-monitor
{
    printf("monitor: pid %d, who %s, what %s, node %s, type %s, reason %s\n",
           pid,
           copyinstr(arg0), copyinstr(arg1), copyinstr(arg2), copyinstr(arg3),
           copyinstr(arg4));
}

erlang*:::dist-port_busy
{
    printf("dist port_busy: node %s, port %s, remote_node %s, blocked pid %s\n",
           copyinstr(arg0), copyinstr(arg1), copyinstr(arg2), copyinstr(arg3));
    /*
     * For variable use advice, see:
     *    http://dtrace.org/blogs/brendan/2011/11/25/dtrace-variable-types/
     *
     * Howevever, it's quite possible for the blocked events to span
     * threads, so we'll use globals.
     */
    blocked_procs[copyinstr(arg3)] = timestamp;
}

erlang*:::dist-output
{
    printf("dist output: node %s, port %s, remote_node %s bytes %d\n",
           copyinstr(arg0), copyinstr(arg1), copyinstr(arg2), arg3);
}

erlang*:::dist-outputv
{
    printf("port outputv: node %s, port %s, remote_node %s bytes %d\n",
           copyinstr(arg0), copyinstr(arg1), copyinstr(arg2), arg3);
}

erlang*:::process-scheduled
/blocked_procs[copyinstr(arg0)]/
{
    pidstr = copyinstr(arg0);
    printf("blocked pid %s scheduled now, waited %d microseconds\n",
           pidstr, (timestamp - blocked_procs[pidstr]) / 1000);
    blocked_procs[pidstr] = 0;
}
